A reinforced composite product of concrete (14) reinforced by reinforcement mesh(s) (13, 13) of an aluminium alloy. where calcium hydroxide of the concrete is absent to avoid or reduce corrosion of the aluminium reinforcement by replacing cement with >35% active pozzolana and that the mesh can be made by slit-stretching or by punching a sheet aluminium metal. The aluminium mesh is advantageous for use as reinforcement in various concrete structures in corrosive environment and where traditional steel meshes are used today.

The invention concerns an ettringitic and stratlingitic binder composition comprising: A) Crystaline calcium aluminate Cement (CAC), B) Ground Granulated Blast Furnace Slag (GGBS), and C) Sulfate source selected from the group consisting of Anhydrite calcium sulfate (AC$) and/or alkali sulfate (A$).

The invention concerns an ettringitic and stratlingitic binder composition comprising: A) Crystaline calcium aluminate Cement (CAC), B) Ground Granulated Blast Furnace Slag (GGBS), and C) Sulfate source selected from the group consisting of Anhydrite calcium sulfate (AC$) and/or alkali sulfate (A$).

Hydraulic binder composition comprising: a mixture of (i) between 20 and 95 dry wt % of at least one steel making slag, (ii) between 4 and 79 dry wt % of at least a slag different from (i) and/or at least one pozzolanic material and/or at least one inert filler, and (iii) between 1 and 25 dry wt % of at least one co-binder; between 0.01 and 10 dry wt %, relative to the mixture total dry weight, of at least one steel making slag accelerator, between 0.1 and 5 dry wt %, relative to the mixture total dry weight, of at least one alkali activator for reacting (i), (ii), and/or (iii) with water, the alkali activator different from the slag accelerator and chosen among alkali mineral salts and mixtures thereof; and between 0.1 and 2 dry wt %, relative to the mixture total dry weight, of at least one fluidification agent.

Hydraulic binder composition comprising: a mixture of (i) between 20 and 95 dry wt % of at least one steel making slag, (ii) between 4 and 79 dry wt % of at least a slag different from (i) and/or at least one pozzolanic material and/or at least one inert filler, and (iii) between 1 and 25 dry wt % of at least one co-binder; between 0.01 and 10 dry wt %, relative to the mixture total dry weight, of at least one steel making slag accelerator, between 0.1 and 5 dry wt %, relative to the mixture total dry weight, of at least one alkali activator for reacting (i), (ii), and/or (iii) with water, the alkali activator different from the slag accelerator and chosen among alkali mineral salts and mixtures thereof; and between 0.1 and 2 dry wt %, relative to the mixture total dry weight, of at least one fluidification agent.

A method of manufacturing an activated pozzolan composition includes: (i) grinding a natural pozzolan, alone or with another mineral component that is not cement clinker, to form a finely ground pozzolan component having a first d90 in a range of about 10 m to about 45 m and a first d10 less than about 5 m; and (ii) blending, without intergrinding, the finely ground pozzolan component with a coarse particulate mineral component comprised of coarse mineral particles not interground with the fine interground particulate component, the coarse particulate component having a second d90 greater than the first d90 and a second d10 greater than the first d10. The natural pozzolan can be one or more of natural pozzolanic deposits, volcanic ash, metakaolin, shale dust, calcined clay, trass, and pumice.

A method of manufacturing an activated pozzolan composition includes: (i) grinding a natural pozzolan, alone or with another mineral component that is not cement clinker, to form a finely ground pozzolan component having a first d90 in a range of about 10 m to about 45 m and a first d10 less than about 5 m; and (ii) blending, without intergrinding, the finely ground pozzolan component with a coarse particulate mineral component comprised of coarse mineral particles not interground with the fine interground particulate component, the coarse particulate component having a second d90 greater than the first d90 and a second d10 greater than the first d10. The natural pozzolan can be one or more of natural pozzolanic deposits, volcanic ash, metakaolin, shale dust, calcined clay, trass, and pumice.

Described herein are processes for the activation of glass pozzolan as well as the activated product. Methods of using the activated product are also described.

A cement composition includes a curable component in an amount of 10 to 25 wt. %; a fine aggregate (FA) in an amount of 20 to 40 wt. %; a coarse aggregate (CA) in an amount of 40 to 50 wt. %; and an alkaline component in an amount of 5 to 15 wt. %, each wt. % based on the total weight of the cement composition. The curable component includes a cementitious material having an average particle size (D.sub.50) of 10 to 17 micrometers (m), a limestone powder (LSP) material having a D.sub.50 of 13 to 19 m, a red mud (RM) material having a D.sub.50 of 30 to 36 m, a silicomanganese fume (SMF) material having a D.sub.50 of 28 to 34 m, and a natural pozzolan (NP) material having a D.sub.50 of 13 to 19 m.

A cement composition includes a curable component in an amount of 10 to 25 wt. %; a fine aggregate (FA) in an amount of 20 to 40 wt. %; a coarse aggregate (CA) in an amount of 40 to 50 wt. %; and an alkaline component in an amount of 5 to 15 wt. %, each wt. % based on the total weight of the cement composition. The curable component includes a cementitious material having an average particle size (D.sub.50) of 10 to 17 micrometers (m), a limestone powder (LSP) material having a D.sub.50 of 13 to 19 m, a red mud (RM) material having a D.sub.50 of 30 to 36 m, a silicomanganese fume (SMF) material having a D.sub.50 of 28 to 34 m, and a natural pozzolan (NP) material having a D.sub.50 of 13 to 19 m.